Bump openssl-sys from 0.9.55 to 0.9.56 (#585)
Bump openssl-sys from 0.9.55 to 0.9.56 (#585)

Bumps [openssl-sys](https://github.com/sfackler/rust-openssl) from 0.9.55 to 0.9.56.
- [Release notes](https://github.com/sfackler/rust-openssl/releases)
- [Commits](https://github.com/sfackler/rust-openssl/compare/openssl-sys-v0.9.55...openssl-sys-v0.9.56)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
alex/ct-tools,alex/ct-tools